An easily wearable noninvasive living body measurement apparatus is provided. The noninvasive living body measurement apparatus (1) is composed of an apparatus body (3) and a wristband (40). The apparatus body (3) is composed of a body section (31) and a body section retention member (4). The body section (31) is retained by the wristband (40) via the body section retention member (4). By allowing the wristband (40) to be attached to a position in the vicinity of a wrist of a forearm of a human, the apparatus body (3) is attached to a human body. An imaging section (5) is retained at a position protruding outside from a width D of the wristband (40). This allows, when the wristband (40) is worn around the arm, the imaging section (5) to be located at a position at which the imaging by the imaging section (5) can be performed.